You do slide your finger, and when you release the finger on a function the control clicks.
The search is useful to, because you do need only click and write to search.
Download the app and see with yourself, is better to understand and sometimes may be a inspiration cup!

Hahaha there's a comment for the Popcorn Time remote then asking it to be more like the Plex remote. I bet there's someone who thinks the Plex remote should be like the Unified Remote Netflix remote lol. No one is ever satisfied :P Good thing Unified Remote is so open/customisable!